Test your knowledge of taxicab geometry, triangular numbers, the golden ratio and more.

If you've ever uncrumpled a crumpled piece of paper, you may have noticed the creases form in geometric patterns. But you probably didn't! It's a crumpled piece of paper! Well, next time, look closer.

HARRISBURG, Pa.--(BUSINESS WIRE)--Math Nation-Pennsylvania, a supplemental Algebra 1, Geometry, and Algebra 2 math program, is now available at no cost to all Pennsylvania public schools and ...